java.lang.NullPointerException
   at org.openide.explorer.view.OutlineView.synchronizeSelectedNodes(OutlineView.java:721)
   at org.openide.explorer.view.OutlineView$TableSelectionListener.propertyChange(OutlineView.java:1162)
   at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:196)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
   at org.openide.explorer.ExplorerManager$2.run(ExplorerManager.java:868)
   at org.openide.util.Mutex.doEvent(Mutex.java:1341)
   at org.openide.util.Mutex.readAccess(Mutex.java:348)
   at org.openide.explorer.ExplorerManager.fireInAWT(ExplorerManager.java:865)
   at org.openide.explorer.ExplorerManager$1AtomicSetSelectedNodes.fire(ExplorerManager.java:285)
   at org.openide.explorer.ExplorerManager.setSelectedNodes(ExplorerManager.java:296)
   at org.openide.explorer.ExplorerManager.setSelectedNodes0(ExplorerManager.java:446)
   at org.openide.explorer.ExplorerManager$1SetExploredContext.run(ExplorerManager.java:345)
   at org.openide.util.Mutex.readAccess(Mutex.java:365)
   at org.openide.util.Mutex$1R.run(Mutex.java:1307)
   at org.openide.util.Mutex.doWrapperAccess(Mutex.java:1324)
   at org.openide.util.Mutex.readAccess(Mutex.java:354)
   at org.openide.explorer.ExplorerManager.setExploredContext(ExplorerManager.java:362)
   at org.openide.explorer.ExplorerManager$1SetRootContext.run(ExplorerManager.java:497)
   at org.openide.util.Mutex.readAccess(Mutex.java:365)
   at org.openide.util.Mutex$1R.run(Mutex.java:1307)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1907)
   at org.openide.util.Mutex.doWrapperAccess(Mutex.java:1326)
   at org.openide.util.Mutex.readAccess(Mutex.java:354)
   at org.openide.explorer.ExplorerManager.setRootContext(ExplorerManager.java:502)
   at org.netbeans.modules.viewmodel.OutlineTable.setModel(OutlineTable.java:331)
   at org.netbeans.spi.viewmodel.Models$1.run(Models.java:180)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:642)
   at java.awt.EventQueue.access$000(EventQueue.java:85)
   at java.awt.EventQueue$1.run(EventQueue.java:603)
   at java.awt.EventQueue$1.run(EventQueue.java:601)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:612)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)